Brake mechanism for reversing-gearing.



, H. A. TUTTLE.

BRAKE MECHANISM FOR REVERSING GEARING.

APPLICATION FILED OCT. 15. 1914.

1,168,766, Pgtented Jan. 18, 1916.

Mira/ sses,

THE COLUMBIA PLANOGRAPH c0 WASHINGTON, D. C.

, HENRYA. TUTTLE, or reun on, massaonusn'rrs. J i

BRAKE MECHANISM For, nnvnnsiNe-enamue.

To all whom itmay concern: I Be it known that I, :HENRYA. TUTTLE, a citizen of the United States, residing at Taunton, in the county of Bristol and State of Massachusetts, have invented an Improvement in Brake Mechanism for Reversing-Gearing, of which the following is a specification. l

'Ihisinventi on relates to brake-mechanism especially adapted for use in connection with reversing-gearing of the type represented in Letters Patent granted to me #901,66 l, dated October 20, 1908; and is intended as animprovement upon the brakemechanism of Letters Patent granted to me #1351328, dated February 4, 1913, and generically considered is disclosed but not claimed in my application #713,020, filed August 3, 1912. 'In the brake-mechanism of said Patent #1,051,928, a pivoted a'ctuatmgmeans for the brake-members is. employed which is connected'by a link with-a clutch actuating-lever, and such construction extends outward' or upward for a considerable distance remote from. the gearing, and necessitates arranging the actuating-means and link essentially at the outside of theinclosing case' for :the gearing,which is objectionable- This invention'has for its object the construction of a brake-mechanism and actuating-means therefor, which may be very compactly arranged with respect to the gearing, and may be easily connected with the clutch actuating-lever, and may beinclosed bythe case which incloses the gearing, yet is very strong and durable, and may be easily operated. i i

Generally tally arranged and longitudinally movable cam-bar, and av pair of semi-circular brakeated, andfalso guiding and supporting the cam-formed end-portion ofsaid bar The cam-faces on the cam-bar are arranged to engage the engaging-portions of the brakemembers when said bar is moved in one directiom and to disengage said engagingportions when said bar is moved in the other direction, and. said cam-faces are so speaking my improved form of bra-keanechanism comprehends a hOl'lZO I1-' Specification of Iiettersfatent. Patented Jan; 18, 1916; Applicatio n filed October 15, 1914. Serial No. 866,820.

arranged on the bar as to admit of longi tudinal movementi of the bar fora predetermined distance without engaging said engaging-portions, thereby admitting of a movement of the clutch actuating-lever into other positions than those designed for operating the brake-mechanism, as for instance, into neutral and into clutch-engaging position. I T V T I Figure 1,.is a side elevation of a reversing: gearing having brake-mechanism: embodying brake-members. Fig. 4, represents-enlarged fragmentary views of the upper end-portion of the brake-members having engaging portions embodying this invention. Fig. 5,

represents plan views of the fragmentary portions shown in Fig. 4, the engaging-portionof one'of the membersbeing omitted.

Fig. 6, is a detail view of the engagingportion which is removed from one of the brake-members of Fig. 5.

The reversing-gearing to which my invention is herein shown as applied, is similar to that of my application for Letters Patent Serial #629,596, filed May 26, 1911,

the sliding-collar is .1 moved longitudinally for the purpose of operating the clutch.

The brake mechanism herein employed, by

which a reverse rotary motion is obtained,

comprises semi-circular brake-members 12,

andlt, similar to those shown'in' my aforesaid Patent #1,051,928, said members being arranged for rocking engagement with each other at their lower ends. I

The member 14 has at its upper end-.

portion, a pair of ears 20 20, see Fig. 5. arranged with a space between them, and each ear 20 has an elongated transverse passage 21 through it,.and a vertically arranged pin 22, with or without a' roll thereon, arranged at the forward end of each passage, leaving an unobstructed space between the periphery of the roll on said pin and the rear end of the passage; These passages, 21"?21 are arranged in alinement.

' this invention. Fig. 2, is a plan view of the same. Fig. 3', is an end-elevatlon of the- The member12 has at its upper end-portion a pair of fiat-surfaced portions 30-30, see Fig. 5 which are arrangedopposite the ears 2020, over which said ears extend,

when the two members 12 and 14 are oscillated and drawn toward each other, said portions 3030 thus serving as bearing-portions beneath said ears. Said member 12 also has at its upper end-portion, between said bearing-portions 3030, a channeledportion 31, which is made of a width substantially corresponding to the space between the ears 20-20, and ofxa lengthto extend forward for a short distance, thereby to, enter saidspace when the two members are drawn toward each other. Inthe channel, ofsaid portion 31 an elongated block 32 is arranged, see Fig. 6 which substantially corresponds inlength and. width with the channel but ismade of a thickness much a greater thanthe depth of the channel, there by to extend above the sides of the channel, and said block has, at its rear end an externally screw-threaded pin 38, which extends 32 has an elongated transverse passage 36 .through it, similar to the transverse pasthrough a hole in an ear 34, arranged at the rear end of the channel and which projects upward, and a 'nut'35 is arranged on the screw-threaded portion of said pin, there 'bytohold the block ?2 in place in the channel-,yand to adjust its position; Said block sages 21, and a pin 37 is arranged vertically atfthe forward end of said passage, with or without a ;roll 38 thereon, leaving an unob- V structed space in rear of the periphery of a roll on said pin. Said passage 36 is arranged in the block .32 above the tops of the sides of the channel. When i the two brake-members are arranged in their normal positions, free from engagement with the cylindrical-member'oi' the gearing, their upper end-portionsare' arranged in cohperative relation,the ears 20 ,20, extending over the bearing-portions 30- 30, and the block .32 entering the space between said ears, and the unobstructed space of the transverse passage 36 is approximatelyin aline'ment with the unobstructed spaces in the passages 2121, 7

thereby to admit of the cam-formed end-portionof a cam-bar being extended through or and 38, which rolls, as here shown, serve as.

and constitute engaging-portions. Referring more specifically to said cam-formed end-portion of the bar,-one edge of the bar has two recesses, and the other edge has one recess, and all of said recesses are similarly formed, each recess comprising an elongated portion'45, the bottom ofwhich engages the adjacent roll, but exerts thereupon no'substantial pressure, at least not sufficient to move the roll bodily tooscillate the brakemembers, hence permits of a longitudinal movement of the bar independently of the brake-members, and also comprising a depression 46, in continuation of said elongated portion 45, which likewise permits of a longitudinal movement of the bar without bodilvmoving the roll, and also com- I prising an upwardly inclined portion 47, which serves as a cam, which, when brought. into engagement with the adjacent roll moves said roll bodily, thereby to draw the two brake-members toward "each other, and

causing them to engage the cylindrical-member of the gearing which they embrace, and restraln said member from rotation. Longis tudinal movement is imparted to the bar by a movement of the clutch actuating means TVItll which it is connected, but suchlconnection, however, is for the'purpose of enabling the same actuating-member to be employed to operate both the clutch and the brake.

As said bar is arranged in the passages 21 and 36,.it is supported andguided, and, therebv held in position for engagement with the rolls when moved;

As here shown, the pivot-shaft 79 is designed to occupy three difl'erent positions, as represented by, dotted lines, Fig. 1, and when I moved into the dotted line position indicated at .the extreme right, the cam-bar will be moved in a' corresponding direction far enough for its cams to engage the engagingportions of the brake-members, thereby to move said brake-members into engaging position. When said pivot-shaft 79, is moved into the middle or vertical dotted-line postion, the cam-bar is correspondingly moved far enough for its cams tov disengage the en gaging-portions bf the brake-members, thereby to permit saidbrake membersto dislie engage the cylindrical-member. This is the neutral position; and with the parts in this position the rolls enter the depressed portions or recesses 46 at the bottoms of the inclined portions. These recesses-46 are pro vided particularly for the purpose of'holding the cam-bar against longitudinal vibra tion, which is attained by the resiliency of the brake-members exerting their pressure thereupon. moved into the dotted-line position at the extreme left, the cam-bar is correspondingly moved far enough for the clutch to be operated, and during such movement its cams move away from the rolls and the rolls fol- When said pivot-shaft 79 is 7 low along the elongated portions of the recesses in the cam-bar. It will be observed that said cam-bar, when arrangedhorizontally, as here shown, and made movable in a longitudinaldirection to operate the brake members, occupies a position close to the oted brakeanembers having engaging portions a lon 'itudinal movable bar arran ed a t: horizontally with respect to the. gear1ng, a pivoted actuating-lever tor the clutch actuating-mechanism of the gearing to which one end of said bar is loosely connected, said bar having at its other'end recesses to receive the en 'a in ortions of the brake-members each recess comprising an elongated portion and an inclined portion, the elongated-pen tions being arranged to permit longitudinal movement of the bar without exerting pressure upon the engaging-portions, to enable the actuating-lever to be moved to operate the clutch-mechanism, and the inclined-portions being arranged to act to move the engaging-portions to operate the brakemembers.

2. A. reversing-gearing andbrake-mechanism therefor comprising a pair of brakemembers having engaging-portions, a horizontally-arranged bar adapted for longitudinal reciprocation, a pivoted actuatinglever for the clutch-mechanism to which one end of said bar is loosely connected, the other end of said bar having recesses, each recess having an elongated portion and an inclined portion, the engaging-portions of the brake-members normally occupying positions in the recesses substantially at the junction of the engagingportions and inclined-portions, so that when the bar is moved in one direction from normal, said engagingportions will engage the inclinedportions, and will be moved to operate the brake-members, and when the bar is moved in the other direction from normal, said engaging-portions will remain at rest.

3. The bralremiecliaiiisiii for reversinggearing herein described, consist ng of a pair of brake-members movable toward and from each other, having alined guiding and supporting means provided with engagingportions, a sliding-bar arranged for connection with the clutch-mechanism of the gearing, said bar having its end-portion guided and supported by said means, and having recesses in its end-portion to receive said engaging-portion, each recess comprising an elongated-portion and an 'inclined-portiofn,v

the elongated-portions permitting, longitudinal movement of the bar without exerting pressure upon 1 the engaging-portions, and

the inclined-portions acting to move the engaging-portions to operate the brake-menr, bers.

4. The brake-mechanism for reversing gearing herein described, consisting of a pair of brake menibers arranged for rocking engagement with each other at their lower ends, and havingengagingportions at their upper ends, and a longitudinal movable bar arranged for connection with the clutch actuating-mechanism of the gearing, said bar having recesses in its edges for the engaging-portions of the brake-members, each recess comprising an elongated-portion and an inclined-portion, the elongated-portions of the recesses permitting longitudinal movement of the bar without exerting pres-' sure upon the engaging-portions, and the inclined-portions acting to move the engaging-portions to rock the brake-members.

5. The brake-mechanism for reversinggearing herein described, consisting of a pair of brake-members arranged for rocking engagement with each other at their lower ends, and having engaging-portions at their upper ends, and a longitudinal movable cam-bar arranged for connection with the clutch actuating-mechanism of the gearing, said bar having recesses in its edges for the engaging-portions of the brake-members, each recess comprising an elongatedportion, a depression, and an inclined-portion, the elongated portions and the depressions of the recesses permitting longitudinal movement of the bar without exerting pressure upon the engaging portions, and the inclined-portions acting to move the engaging-portions to rock the brake-members.

6. The brake-mechanism for reversinggearing herein described, consisting of a longitudinally movable horizontally dis-.

posed cam-bar arranged for connection with the clutch-actuating-mechanism of the gearing, a pair of semi-circular oscillating brakemembers, one of said members having one or more ears with transverse passages and engaging-portions arranged in said passages, and the other brake-member having an ear with a transverse passage and an engaging-portion arranged in said passage, all of said passages being adapted to be arranged in alinement to receive the cam-formed end-portions of the cam-bar, longitudinal movement of said bar causing the cam faces thereon to engage said engaging-portions and thereby move the brakemembers.

7. The brake-mechanism herein described for reversing-gearing, consisting of a pair of brake-members arranged to embrace a cylindrical-member of the gearing, one of said members having one or more ears adapted to extend over the other member and,

formed with a transverse passage and having a roll arranged in said passage, and the other member having an adjustable block clutch actuating-mechanism of the gearing.

8.- The brake-mechanism herein described for reversing-gearing consisting of a pair of brake-members arrangedto embrace a cylindrical-member of the gearing, one of said members having one or more ears adapted to extend over the other member and formed with transverse passages and having rolls arranged in said passages,, and the other member having an adjustable block with a transverse passage. and a roll arranged in said passage, all said passages being arranged in alinement, and a longitudinally movable cam-bar arranged in said passages for engagement with said rolls, said bar being connected with the clutch actuating-mechanism of the gearing, said'bar having elongated recesses formed in itsedges terminated at one end by inclined portions,

V HENRYA. TUTTLE.

Witnesses: V i i B. J. NoYns,

H. B. DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

